CN218130432U - Cantilever type circulating water secondary filter screen device - Google Patents
Cantilever type circulating water secondary filter screen device Download PDFInfo
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- CN218130432U CN218130432U CN202221931816.2U CN202221931816U CN218130432U CN 218130432 U CN218130432 U CN 218130432U CN 202221931816 U CN202221931816 U CN 202221931816U CN 218130432 U CN218130432 U CN 218130432U
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Abstract
The utility model belongs to the technical field of power plant boiler and steam turbine system, in particular to cantilever type circulating water secondary filter unit. The device of the utility model comprises an L-shaped shell connected with a pipeline, a driving mechanism is arranged on the shell, the output end of the driving mechanism is connected with a solid transmission shaft, the solid transmission shaft extends into the shell, the other end of the solid transmission shaft is connected with a hollow sewage discharging rotor, the other end of the hollow sewage discharging rotor is sleeved with a sewage discharging pipe, a first stuffing box body is arranged between the sewage discharging pipe and the hollow sewage discharging rotor, and the other end of the sewage discharging pipe extends out of the shell; a net core arranged towards the water inlet of the shell is fixed in the shell, a sliding bearing is connected between the net core and the hollow sewage discharging rotor, a sewage discharging hopper is fixed on the hollow sewage discharging rotor, one side of the sewage discharging hopper is arranged close to the net core and is provided with a slag inlet, and the sewage discharging hopper is communicated with the hollow sewage discharging rotor. The utility model provides a can avoid cantilever type circulating water secondary filter unit of rotatable parts jamming.
Description
Technical Field
The utility model belongs to the technical field of power plant boiler and steam turbine system, in particular to cantilever type circulating water secondary filter unit.
Background
The condensing steam turbine uses circulating water of a power plant as a cooling water source, and a large-capacity power plant usually selects direct-current cooling due to large consumption of the circulating water. The circulating water for direct current cooling is taken from rivers or seas, and the water quality is greatly changed. The water contains more sand, impurities and sundries, the integral cleaning degree is poor, the heat exchange pipeline of the condenser is easy to wear, seawater can carry various marine organisms, the scaling and blocking conditions in the tube bundle of the condenser are aggravated after long-term operation, the flow of circulating water is reduced, the heat transfer performance is reduced, the steam consumption of the steam turbine is increased, and the steam turbine must be shut down for treatment in serious conditions. Once the condenser heat exchange tube takes place the damage, can only stifled pipe, after the stifled pipe quantity of heat exchange tube exceeded design allowance, the condenser will unable heat transfer ability under the design operating mode that reaches.
The existing secondary filter screen utilizes a negative pressure back washing principle, the structure of the filter screen comprises two structural types of screen core rotation and sewage discharge groove rotation, and the installation mode comprises horizontal and vertical. As shown in fig. 2, the secondary filter screen device comprises a shell 1, a driving mechanism 9 is mounted on the shell 1, and the output end of the driving mechanism 9 is connected with a solid transmission shaft 2; a sewage discharge pipe 6 is arranged in the shell 1, a sewage discharge hopper 4 is arranged on the sewage discharge pipe 6, a horizontal bearing chamber 16 is connected on the sewage discharge pipe 6, the horizontal bearing chamber 16 comprises two rolling bearings 8, a net core 5 is arranged in the shell 1, a radial plate 17 is arranged close to the net core 6, and a worm and gear mechanism 15 is connected between the horizontal bearing chamber 16 and the solid transmission shaft 2; the horizontal bearing chamber 16 is located on the water inlet side of the housing.
The existing secondary filter screen device has the following structural defects:
first, transmission part has bearing part or gear part to be located inside the secondary filter screen all the time, and lubricating grease can't be changed on line, and bearing and gear can't obtain effective lubrication for a long time, and the fragile inefficacy causes the rotating part bite, unable normal backwash and blowdown.
Secondly, the static seal between the bearing chamber and the gear box is usually made of felt or sealing ring materials, and the dynamic seal is made of packing seal and framework oil seal. When the bearing is soaked in water for a long time, the sealing is easy to lose efficacy, and water and impurities enter the bearing chamber and the gear box to accelerate the damage of the bearing and the gear.
Third, some secondary filter screen internal bearings adopt water lubricated bearing, but the bearing is located the net core import side, and quality of water is not good enough, and long-term operation back, impurity gets into the bearing, leads to water lubricated bearing to damage the inefficacy.
Because the existing secondary filter screen has the defects in the aspect of the structure, the secondary filter screen of some power plants frequently fails during debugging, the secondary filter screen of some power plants is barely and normally used in a short time after the unit is put into operation, various failure problems begin to be exposed for a long time, the circulating water quantity is reduced, the vacuum degree of a condenser is deteriorated, the steam consumption of a steam turbine is increased, and finally the unit has to be reduced in load and operated or even shut down. The secondary filter screen is frequently maintained, normal power generation operation of the unit is influenced, and a large amount of manpower, material resources and financial resources are required to be input. Therefore, the secondary filter screen fault threatens the safe and reliable operation of the steam turbine generator set and directly influences the economical efficiency of the operation of a power plant.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model aims to provide a cantilever type circulating water secondary filter screen device capable of avoiding the jamming of a rotating part.
The utility model discloses the technical scheme who adopts does:
a cantilever type circulating water secondary filter screen device comprises an L-shaped shell connected with a pipeline, wherein a driving mechanism is installed on the shell, the output end of the driving mechanism is connected with a solid transmission shaft, the solid transmission shaft extends into the shell, the other end of the solid transmission shaft is connected with a hollow pollution discharge rotor, the other end of the hollow pollution discharge rotor is sleeved with a pollution discharge pipe, a first filler box body is arranged between the pollution discharge pipe and the hollow pollution discharge rotor, and the other end of the pollution discharge pipe extends out of the shell; a net core arranged towards the water inlet of the shell is fixed in the shell, a sliding bearing is connected between the net core and the hollow sewage discharging rotor, a sewage discharging hopper is fixed on the hollow sewage discharging rotor, one side of the sewage discharging hopper is arranged close to the net core and is provided with a slag inlet, and the sewage discharging hopper is communicated with the hollow sewage discharging rotor.
The utility model discloses a be connected slide bearing between hollow blowdown rotor's one end and the net core, slide bearing department sets up suitable clearance, guarantees that rivers pass through in order to play the lubricated effect of water, and avoids impurity to pass through this clearance. A first filler box body is arranged between the other end of the hollow sewage discharging rotor and the sewage discharging pipe, the hollow sewage discharging rotor can rotate relative to the sewage discharging pipe, and the first filler box body plays a good sealing role. Under the condition that the hollow pollution discharge rotor is well supported and sealed, a rolling bearing is not needed to be arranged, and the situation that the part of the net core facing to one side of the water inlet is blocked easily due to the fact that the rolling bearing is arranged on the part is avoided. Therefore, the utility model discloses very big reinforcing equipment reliability of operation, improved the security and the economic nature of turbo generator set operation, reduced operating personnel's intensity of labour, practiced thrift and overhauld the maintenance cost, had good economic benefits and social.
As the utility model discloses an optimal scheme, actuating mechanism includes the motor, and the output of motor is connected with the reduction gear, is provided with the mounting panel on the casing, and motor and reduction gear are installed on the mounting panel, and solid transmission shaft is connected with the output of reduction gear. The motor drives the reducer to act, the reducer drives the solid transmission shaft to rotate, and the solid transmission shaft drives the hollow pollution discharge rotor and the pollution discharge hopper to rotate.
As the preferred scheme of the utility model, be connected with antifriction bearing between solid transmission shaft and the mounting panel. The rolling bearing on the mounting plate supports the solid transmission shaft, and the solid transmission shaft is guaranteed to rotate more stably.
As the utility model discloses a preferred scheme, be provided with first soft filler mouth on the casing, first soft filler mouth passes through pipeline and first filler box body intercommunication. And a stuffing box is added through the first soft stuffing filling port, so that the gap between the sewage discharge pipe and the hollow sewage discharge rotor is reliably sealed.
As the preferred scheme of the utility model, be provided with the second filler letter body between solid transmission shaft and the casing. The second stuffing box can reliably seal the gap between the solid transmission shaft and the shell.
As the utility model discloses a preferred scheme, be provided with second soft filler on the casing, second soft filler passes through pipeline and second filler letter body intercommunication.
As the preferred scheme of the utility model, be connected with the shaft coupling between solid transmission shaft and the hollow blowdown rotor. The solid transmission shaft is connected with the hollow sewage discharging rotor through the rigid coupler, and the coupler can be separated when necessary, so that the maintenance is convenient.
As the preferred proposal of the utility model, one end of the sewage discharge pipe extending out of the shell is connected with a sewage discharge valve. When the drain valve is opened, the impurities can be discharged from the drain pipe.
The utility model has the advantages that:
the utility model discloses a be connected slide bearing between hollow blowdown rotor's one end and the net core, slide bearing department sets up suitable clearance, guarantees that rivers pass through in order to play the lubricated effect of water, and avoids impurity to pass through this clearance. Set up the first filler box body between the other end of hollow blowdown rotor and the blow off pipe, hollow blowdown rotor can rotate for the blow off pipe, and the first filler box body plays good sealed effect. Under the condition that the hollow pollution discharge rotor is well supported and sealed, a rolling bearing is not needed to be arranged, and the situation that the part of the net core facing to one side of the water inlet is blocked easily due to the fact that the rolling bearing is arranged on the part is avoided. Therefore, the utility model discloses very big reinforcing the reliability of equipment operation, improved the security and the economic nature of turbo generator set operation, reduced operating personnel's intensity of labour, practiced thrift and overhauld the maintenance cost, had good economic benefits and social.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of a conventional horizontal fixed mesh core rotary sewage discharge groove type secondary filter screen.
In the figure: 1-a shell; 2-solid drive shaft; 3-a hollow blowdown rotor; 4-a sewage draining hopper; 5-a mesh core; 6-a sewage draining pipe; 7-a plain bearing; 8-rolling bearings; 9-a drive mechanism; 10-a second stuffing box; 11-a first stuffing box; 12-a coupling; 13-a second soft-packing filler port; 14-a first soft-fill port; 15-a worm gear mechanism; 16-a horizontal bearing chamber; 17-webs.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
As shown in fig. 1, the cantilever type circulating water secondary filter screen device of the embodiment comprises an L-shaped housing 1 connected with a pipeline, a driving mechanism 9 is installed on the housing 1, an output end of the driving mechanism 9 is connected with a solid transmission shaft 2, the solid transmission shaft 2 extends into the housing 1, the other end of the solid transmission shaft 2 is connected with a hollow sewage discharging rotor 3, the other end of the hollow sewage discharging rotor 3 is sleeved with a sewage discharging pipe 6, a first filler box 11 is arranged between the sewage discharging pipe 6 and the hollow sewage discharging rotor 3, the other end of the sewage discharging pipe 6 extends out of the housing 1, and one end of the sewage discharging pipe 6 extending out of the housing 1 is connected with a sewage discharging valve; the utility model discloses a sewage treatment device, including casing 1, the internal fixation of casing has the net core 5 towards the water inlet setting of casing 1, is connected with slide bearing 7 between net core 5 and the hollow blowdown rotor 3, is fixed with blowdown fill 4 on the hollow blowdown rotor 3, and one side of blowdown fill 4 is close to net core 5 setting and is provided with the slag inlet, and blowdown fill 4 and hollow blowdown rotor 3 intercommunication.
The utility model discloses a be connected slide bearing 7 between hollow blowdown rotor 3's one end and the net core 5, slide bearing 7 department sets up suitable clearance, guarantees that rivers pass through in order to play the lubricated effect of water, and avoids impurity to pass through this clearance. Set up first filler box body 11 between the other end of hollow blowdown rotor 3 and blow off pipe 6, hollow blowdown rotor 3 can rotate for blow off pipe 6, and first filler box body 11 plays good sealed effect. Under the condition that the hollow pollution discharge rotor 3 is well supported and sealed, the rolling bearing 8 is not needed to be arranged, and the situation that the rolling bearing 8 is arranged on the part of the net core 5 facing one side of the water inlet to cause jamming easily is avoided. Therefore, the utility model discloses very big reinforcing the reliability of equipment operation, improved the security and the economic nature of turbo generator set operation, reduced operating personnel's intensity of labour, practiced thrift and overhauld the maintenance cost, had good economic benefits and social.
The driving mechanism 9 comprises a motor, the output end of the motor is connected with a speed reducer, the shell 1 is provided with a mounting plate, the motor and the speed reducer are mounted on the mounting plate, and the solid transmission shaft 2 is connected with the output end of the speed reducer. The motor drives the reducer to act, the reducer drives the solid transmission shaft 2 to rotate, and the solid transmission shaft 2 drives the hollow pollution discharge rotor 3 and the pollution discharge hopper 4 to rotate.
Furthermore, a rolling bearing 8 is connected between the solid transmission shaft 2 and the mounting plate. The rolling bearing 8 on the mounting plate supports the solid transmission shaft 2, and the solid transmission shaft 2 is guaranteed to rotate more stably.
A first soft filling port 14 is formed in the shell 1, and the first soft filling port 14 is communicated with the first filler box body 11 through a pipeline. And a stuffing box is added through the first soft stuffing filling port 14, so that the gap between the sewage discharge pipe 6 and the hollow sewage discharge rotor 3 is reliably sealed.
A second stuffing box body 10 is arranged between the solid transmission shaft 2 and the shell 1. The second stuffing box body 10 can reliably seal the gap between the solid transmission shaft 2 and the housing 1. And a second soft filler filling port 13 is formed in the shell 1, and the second soft filler filling port 13 is communicated with a second filler box body 10 through a pipeline.
And a coupler 12 is connected between the solid transmission shaft 2 and the hollow pollution discharge rotor 3. The solid transmission shaft 2 is connected with the hollow pollution discharge rotor 3 through the rigid coupler 12, and the coupler 12 can be separated when necessary, so that the maintenance is convenient.
It should be noted that:
the hollow sewage discharging rotor 3 is integrally arranged in a cantilever type, and a sealing plate made of wear-resistant non-metallic materials is arranged at the tail end of a sewage discharging bucket 4 on the hollow sewage discharging rotor 3 and used for keeping good fit with the inner surface of the net core 5.
The solid transmission shaft 2 is positioned at the outlet side of the net core 5, the net core 5 is fixed on a sliding bearing 7 seat, and the sliding bearing 7 is arranged between the sliding bearing 7 seat and the hollow pollution discharge rotor 3. The sewage discharge end of the hollow sewage discharge rotor 3 extends into the first stuffing box body 11, the end part of the inner side of the sewage discharge pipe 6 is fixed on the first stuffing box body 11, and the internal structure is simple.
The sliding bearing 7 is made of high polymer materials, and is resistant to abrasion and seawater corrosion. The sliding bearing 7 is positioned on the outlet side of the net core 5 and lubricated by filtered circulating water, so that the water quality is good. The selection of the material and the installation position of the sliding bearing 7 is beneficial to prolonging the service life of the bearing.
The rolling bearing 8 adopts a double-row angular contact ball bearing, can bear radial load and balance axial load acting in two directions, and belongs to a radial thrust bearing. The rolling bearing 8 and the second packing box body 10 keep a certain distance, and the bearing is effectively prevented from being polluted when the second packing box body 10 leaks under special conditions.
All be equipped with the packing box body between solid transmission shaft 2 and casing 1, between hollow blowdown rotor 3 and blow off pipe 6, be equipped with mud form wadding in the packing box body and seal, can realize zero leakage, have the filling pipe on the packing box body and lead to the outside of secondary filter screen casing 1, conveniently supply mud form wadding at any time.
The working principle is as follows:
water is introduced from a water inlet of the shell 1, the motor drives the speed reducer to act, and the speed reducer drives the solid transmission shaft 2 and the hollow pollution discharge rotor 3 to rotate. When the electric blow-down valve is opened, the blow-down bucket 4 on the hollow blow-down rotor 3 rotates, and under the action of negative pressure, impurities on the net core 5 enter the blow-down bucket 4 from the slag inlet on the blow-down bucket 4 and are discharged by the blow-down pipe 6.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (8)
1. The utility model provides a cantilever type circulating water secondary filter screen device which characterized in that: the device comprises an L-shaped shell (1) connected with a pipeline, wherein a driving mechanism (9) is installed on the shell (1), the output end of the driving mechanism (9) is connected with a solid transmission shaft (2), the solid transmission shaft (2) extends into the shell (1), the other end of the solid transmission shaft (2) is connected with a hollow blow-down rotor (3), the other end of the hollow blow-down rotor (3) is sleeved with a blow-off pipe (6), a first packing box body (11) is arranged between the blow-off pipe (6) and the hollow blow-down rotor (3), and the other end of the blow-off pipe (6) extends out of the shell (1); the utility model discloses a sewage treatment device, including casing (1), casing (1) internal fixation has net core (5) towards the water inlet setting of casing (1), is connected with slide bearing (7) between net core (5) and hollow blowdown rotor (3), is fixed with blowdown fill (4) on hollow blowdown rotor (3), and one side of blowdown fill (4) is near net core (5) setting and is provided with the slag inlet, and blowdown fill (4) and hollow blowdown rotor (3) intercommunication.
2. The cantilever type circulating water secondary filter screen device of claim 1, wherein: the driving mechanism (9) comprises a motor, the output end of the motor is connected with a speed reducer, a mounting plate is arranged on the shell (1), the motor and the speed reducer are mounted on the mounting plate, and the solid transmission shaft (2) is connected with the output end of the speed reducer.
3. The cantilever type circulating water secondary filter screen device of claim 2, wherein: and a rolling bearing (8) is connected between the solid transmission shaft (2) and the mounting plate.
4. The cantilever type circulating water secondary filter screen device of claim 1, wherein: a first soft filling port (14) is formed in the shell (1), and the first soft filling port (14) is communicated with the first filling box body (11) through a pipeline.
5. The cantilever type circulating water secondary filter screen device of claim 1, wherein: and a second packing box body (10) is arranged between the solid transmission shaft (2) and the shell (1).
6. The cantilever type circulating water secondary filter screen device according to claim 5, wherein: and a second soft filler filling port (13) is formed in the shell (1), and the second soft filler filling port (13) is communicated with a second filler box body (10) through a pipeline.
7. The cantilever type circulating water secondary filter screen device according to claim 1, wherein: and a coupler (12) is connected between the solid transmission shaft (2) and the hollow pollution discharge rotor (3).
8. The cantilever type circulating water secondary filter screen device of any one of claims 1 to 7, wherein: one end of the sewage discharge pipe (6) extending out of the shell (1) is connected with a sewage discharge valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221931816.2U CN218130432U (en) | 2022-07-25 | 2022-07-25 | Cantilever type circulating water secondary filter screen device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221931816.2U CN218130432U (en) | 2022-07-25 | 2022-07-25 | Cantilever type circulating water secondary filter screen device |
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| CN218130432U true CN218130432U (en) | 2022-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221931816.2U Active CN218130432U (en) | 2022-07-25 | 2022-07-25 | Cantilever type circulating water secondary filter screen device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116335776A (en) * | 2023-01-30 | 2023-06-27 | 南通常安能源有限公司 | Recycling device for cogeneration and permeation separation wastewater |
-
2022
- 2022-07-25 CN CN202221931816.2U patent/CN218130432U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116335776A (en) * | 2023-01-30 | 2023-06-27 | 南通常安能源有限公司 | Recycling device for cogeneration and permeation separation wastewater |
| CN116335776B (en) * | 2023-01-30 | 2023-10-20 | 南通常安能源有限公司 | Recycling device for cogeneration and permeation separation wastewater |
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